Chaos signal generator by IIR digital filters including nonlinear functions and its application

Umezawa, Yasushi; Dobashi, Masamichi; Kamata, Hiroyuki; Endo, Tetsuro

doi:10.1109/kes.1998.725842

Cited by 1 publication

(2 citation statements)

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“…In [16], it is mentioned that chaotic systems show splendid performance once the key generator is properly chosen. In [17], chaos in the linear digital filter (FIR) is designed to function as an encryptor while its inverse instruction is used as the decryptor. In this paper, we furtherly propose an encryptor based on chaos in nonlinear digital filter, since it can (1) make the system more sensitive to coefficients (2) provide convenience for hardware implementation when digital signal processor (DSP) is combined with digital transmission.…”

Section: While Ormentioning

confidence: 99%

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Generation of an Indoor 2D Map and Track Encryption Based on Mobile Crowdsourcing

Cao¹

2018

IJET

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The widespread application of mobile crowdsourcing modes provides new ideas for generating indoor maps. By collecting and analyzing the trajectory datas of users properly, we can obtain the location information of indoor paths. Unfortunately, currently studies usually rely heavily on a satellite location, which restricts their indoor application. In this paper, a simple and practical method of generating indoor maps on Andriod platform is presented, and this method is able to correct deviation duly. User's datas collected by several bulit-in sensors are preprocessed utilizing Gaussian filter, after which we adopt feature recognition to confirming one's walking track based on multiple experiment datas. In order to integrate tracks generated by different persons, we then propose a new data structure based on a transition probability that can be updated online to store track information. In addition, we minimize possible deviations by testing the signal power launched by four Bluetooth base stations. Discrete tracks are finally integrated into a complete indoor map using a graph_based model. We then propose a novel encryption scheme exploiting chaos in a nonlinear digital filter, where secure key generation methods are discussed in detail. The secure key scheme includes: 1)channel measurement 2)a decorrelation transform 3)multibit adaptive quantization and encoding. Experiments are conducted in rectangle fields of 8m*8m, 44m*44m, respectively, and the results show our method can attain a maximum error of 5.94%.

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Section: While Ormentioning

confidence: 99%

“…With the conclusion of [17], the -order discrete system stays stable if and only if the multidimensional z-transform:…”

Section: )mentioning

confidence: 99%

Generation of an Indoor 2D Map and Track Encryption Based on Mobile Crowdsourcing

Cao¹

2018

IJET

View full text Add to dashboard Cite

show abstract

Chaos signal generator by IIR digital filters including nonlinear functions and its application

Cited by 1 publication

References 6 publications

Generation of an Indoor 2D Map and Track Encryption Based on Mobile Crowdsourcing

Generation of an Indoor 2D Map and Track Encryption Based on Mobile Crowdsourcing

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